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Do you know someone with red hair? Perhaps you have those fiery locks yourself. This video takes a close biochemical look into what makes redheads stand out from the crowd. It's not just the color of their hair. Credit: Reactions/American…

Best-selling author Sam Kean debunks the myth of the Megalodon, the 50-foot super shark that, despite what you may have read, is long extinct. In this video, Kean unravels the myth by explaining how the element manganese holds the key.…